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...flight - Use virtqueue_detach_unused_buf to get request dispatched to driver Signed-off-by: Asias He <asias at redhat.com> --- drivers/block/virtio_blk.c | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/drivers/block/virtio_blk.c b/drivers/block/virtio_blk.c index 72fe55d..693187d 100644 --- a/drivers/block/virtio_blk.c +++ b/drivers/block/virtio_blk.c @@ -576,6 +576,8 @@ static void __devexit virtblk_remove(struct virtio_device *vdev) { struct virtio_blk *vblk = vdev->priv; int index = vblk->index; + struct virtblk_req *vbr; + unsigned long flags; /* Prevent...

...flight - Use virtqueue_detach_unused_buf to get request dispatched to driver Signed-off-by: Asias He <asias at redhat.com> --- drivers/block/virtio_blk.c | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/drivers/block/virtio_blk.c b/drivers/block/virtio_blk.c index 72fe55d..693187d 100644 --- a/drivers/block/virtio_blk.c +++ b/drivers/block/virtio_blk.c @@ -576,6 +576,8 @@ static void __devexit virtblk_remove(struct virtio_device *vdev) { struct virtio_blk *vblk = vdev->priv; int index = vblk->index; + struct virtblk_req *vbr; + unsigned long flags; /* Prevent...

...m MAINTAINERS. > --- > drivers/block/virtio_blk.c | 90 ++++++++++++++++++++++++++++++++++++++++++- > include/linux/virtio_blk.h | 5 ++- > 2 files changed, 91 insertions(+), 4 deletions(-) > > diff --git a/drivers/block/virtio_blk.c b/drivers/block/virtio_blk.c > index 693187d..5602505 100644 > --- a/drivers/block/virtio_blk.c > +++ b/drivers/block/virtio_blk.c > @@ -397,6 +397,83 @@ static int virtblk_name_format(char *prefix, int index, char *buf, int buflen) > return 0; > } > > +static int virtblk_get_cache_mode(struct virtio_device *vdev) W...

...m MAINTAINERS. > --- > drivers/block/virtio_blk.c | 90 ++++++++++++++++++++++++++++++++++++++++++- > include/linux/virtio_blk.h | 5 ++- > 2 files changed, 91 insertions(+), 4 deletions(-) > > diff --git a/drivers/block/virtio_blk.c b/drivers/block/virtio_blk.c > index 693187d..5602505 100644 > --- a/drivers/block/virtio_blk.c > +++ b/drivers/block/virtio_blk.c > @@ -397,6 +397,83 @@ static int virtblk_name_format(char *prefix, int index, char *buf, int buflen) > return 0; > } > > +static int virtblk_get_cache_mode(struct virtio_device *vdev) W...

When user hot-unplug a disk which is busy serving I/O, __blk_run_queue might be unable to drain all the requests. As a result, the blk_drain_queue() would loop forever and blk_cleanup_queue would not return. So hot-unplug will fail. This patch adds a callback in blk_drain_queue() for low lever driver to abort requests. Currently, this is useful for virtio-blk to do cleanup in hot-unplug. Cc:

When user hot-unplug a disk which is busy serving I/O, __blk_run_queue might be unable to drain all the requests. As a result, the blk_drain_queue() would loop forever and blk_cleanup_queue would not return. So hot-unplug will fail. This patch adds a callback in blk_drain_queue() for low lever driver to abort requests. Currently, this is useful for virtio-blk to do cleanup in hot-unplug. Cc:

...| 4 ++++ drivers/virtio/virtio_ring.c | 21 +++++++++++++++------ include/linux/virtio.h | 1 + net/9p/trans_virtio.c | 4 ++++ 8 files changed, 40 insertions(+), 6 deletions(-) diff --git a/drivers/block/virtio_blk.c b/drivers/block/virtio_blk.c index 693187d..a2c8d97 100644 --- a/drivers/block/virtio_blk.c +++ b/drivers/block/virtio_blk.c @@ -19,6 +19,9 @@ static DEFINE_IDA(vd_index_ida); struct workqueue_struct *virtblk_wq; +static unsigned int indirect_thresh = 0; +module_param(indirect_thresh, uint, S_IRUGO); + struct virtio_blk { spinlock_...

...| 4 ++++ drivers/virtio/virtio_ring.c | 21 +++++++++++++++------ include/linux/virtio.h | 1 + net/9p/trans_virtio.c | 4 ++++ 8 files changed, 40 insertions(+), 6 deletions(-) diff --git a/drivers/block/virtio_blk.c b/drivers/block/virtio_blk.c index 693187d..a2c8d97 100644 --- a/drivers/block/virtio_blk.c +++ b/drivers/block/virtio_blk.c @@ -19,6 +19,9 @@ static DEFINE_IDA(vd_index_ida); struct workqueue_struct *virtblk_wq; +static unsigned int indirect_thresh = 0; +module_param(indirect_thresh, uint, S_IRUGO); + struct virtio_blk { spinlock_...

This patch set fixes the race when hot-unplug stressed disk. Asias He (3): virtio-blk: Call del_gendisk() before disable guest kick virtio-blk: Reset device after blk_cleanup_queue() virtio-blk: Use block layer provided spinlock drivers/block/virtio_blk.c | 25 ++++++------------------- 1 file changed, 6 insertions(+), 19 deletions(-) -- 1.7.10.2

This patch set fixes the race when hot-unplug stressed disk. Asias He (3): virtio-blk: Call del_gendisk() before disable guest kick virtio-blk: Reset device after blk_cleanup_queue() virtio-blk: Use block layer provided spinlock drivers/block/virtio_blk.c | 25 ++++++------------------- 1 file changed, 6 insertions(+), 19 deletions(-) -- 1.7.10.2